IDF Score Vector

A IDF Score Vector is a real vector that represents the IDF score of each member [math]\displaystyle{ t }[/math] within a multiset space [math]\displaystyle{ C }[/math] (often a text corpus).

• Context:
  • It can be represented a [math]\displaystyle{ [\text{IDF}(t_1,C), \text{IDF}(t_2,C), ..., \text{IDF}(t_n,C)] }[/math], where ...
  • It can be used by a IDF-based Distance Function/IDF Vector Distance Function.
  • …
• Example(s):
  • [math]\displaystyle{ \text{IDF}_{\text{vector}}(\text{Corpus}_C) = [(``red",0.187...), (``chrome-plated",0.002...), ..., (``\text{zoo}",0.012)] }[/math].
  • …
• Counter-Example(s):
  • a Normed Frequency Vector.
  • an tf-idf Score Vector.
  • a PMI Score Vector.
• See: Text Clustering.

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